Pin-lock.



No.'758,o26.

i PATENTED JMPR. 19 `1904. W. H. TAYLOR.

PIN L0cK.`- APPLIOATION FILED DEU. 18. 1903.

N0 MODEL.

WITNESSES UNITED STATES Patented April 19, 1904.

PATENT OFFICE.

WARREN H. TAYLOR, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE & TOWNE MANUFACTURING COMPANY, `OF STAMFORD, CON- NECTICUT.

PIN-LOCK.

SPECIFICATION formingpart of Letters Patent No. 758,026, dated April 19, 1904.

Application filed December 18,1903.` Serial No. 185,719. (No model.)

To all whom, it may concern;

Be it known that I,WARREN H. TAYLOR, of Stamford, in the county of Fairfield andState of Connecticut, have invented certain new and useful Improvements in Pin-Tumbler Locks with Plurality of Curtains; and I do hereby declare the following to be a full, clear, and

eXact description of the invention, such as will' enable others skilled in the art to which it appertains to make and use the same. l

My invention relates to an improvement in pin-tumbler locks and was designed as an improvement on the lock shown in my pending application, Serial No. 166,625, filed July- 22 In my pending application I disclose an ordinary pin-tumbler lock having a single guard or curtain normally obstructing the key-path in advance of the tumblers and designed to lock the rotary plug to the lock-case or cylinder upon the introduction of a key or picking-tool and to release said plug when the proper key for the lock has been fullyinserted and also a plurality of independently-acting guards or curtains.

The obj ect of the present invention is to more fully close the key-slot in advance of the pintumblers, and thus practically prevent accessto any part of the pin-tumblers without first dislodging the guard or curtain, and also to provide means for locking the plug to the case at two or more points when the guard or curtain is disturbed; and my invention consists in a guard or curtain comprising a plurality of independently-movable members and a guard pin or tumbler connected to and actuated by said members of the guard or curtain.

My invention further consists in the parts and combination of parts and in the details of construction, as will be more fully described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in transverse section of a lock embodying my invention. Fig. 2 is a view in elevation, partly in section, of the same; and F ig. 3 is a view of the key.

1 represents the tumbler-case of a pin-turnbler lock, 2 the plug, and 3 the ordinary twopart spring-actuated pin-tumblers which nor mally lock the plug against movement in the case. This plug is provided with the usual key-slot e.

Formed in the plug 2 are two cylindrical recesses, in which are mounted the two cylindrical guards or curtains 5. The recesses in which the guards or curtains `are mounted communicate with the key-slot 4' and are on portion of the slot above the free lends ofthe tumblers, thus rendering it impossibleto get -at the free ends of the pin-tumblers without disturbing at least one member 5 of the two'- part guard or curtain. i l Formed in the case 1in line with the recesses in the plug 2, carrying the members 5` of the guard or curtain, are recesses 6, into which the upper ends of the members 5 of the guard or curtain are projected when disturbed by the-introduction of a key or other device into the key-slot. These members 5 are of such length that when in their normal positions they rest wholly within the plug, but which when disturbed or moved project more or`less into the case and lock the plug against rota'- tion`.

Formed in the plug abovey the key-slot is the transverse slot 7, in which rests the pivoted lever or yoke 8 and the guard pin or tumbler 9. The lever or yoke 8 is pivoted between its ends to the guard pin ortumbler 9 and bears at its free ends on vshoulders 10, formed by slotting or recessing the members 5 of the guard or curtain. The guard pin or tumbler 9 rests in the plane of recess 11, formed in the case 1, and hence when moved upwardly by the outward movement of either member of the guard or curtain enters said recess l1 and assists in locking the plug against rotation. Located within recess 11 and bearing on the guard-tumbler 9 is the springpressed follower 12, the position of the adjacent ends of the follower and tumbler being into its slot 6. This upward movement of one member 5 of the guard or tumbler,will cause lever or yoke 8 to fulcrum on the shoulder 10 of the other member 5, and thus force or lift guard tumbler 9 into recess 1l in the case, thus locking the plug at two points, If, however, both members 5 of the curtain be engaged by the key or tool, they will both `be forced outwardly into engagement with the ycase and at the same timel lift lever or yoke 8 and its guard-tumbler 9, thus forcing the latter into recess 11 and locking the plug at three separate points, the spring above follower 12 serving to restore all the parts to their normal positions when the obstruction to the return of the members 5 of the guard or curtain has been removed.

The key for this lock is shown in Fig. 3 and is provided at a point below and in rear of the bittings with a recess or slot 14, which when the key is fully inserted receives the adjacent ends of the two members of the guard or curtain and releases the plug from the case.

It is evident that many numerous changes might be resorted to in the relative arrangement of parts herein shown and described without departing from the spirit and scope of my invention. Hence I would have it understood that I do not wish to confine myself to the exact construction of parts herein shown and described; but,

Having fully described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a pin-tumbler lock, the combination with a tumbler-case, plug, and pin-tumblers' carried by said plug, of a guard or curtain composed of a plurality of parts carried by the plug, each part designed to be projected into a recess in the case when moved by the insertion of a key or other instrument.

2.' In a pin-tumbler lock the combination with a tumbler-case, plug and pin-tumblers carried by the'plug, of a guard or curtain carried `by the plug and adapted to be projected .into a recess inthe case, and a guard-tumbler also adapted to be moved into a recess in the case by the movement of the guard or c urtain.`

3. In a pin-tumbler'lock the combination with a tumbler-case, plug, and pin-tumbler, of a guard-tumbler carried by the plug and adapted to engage the case, and a guard or A mal positions.

curtain obstructing the keyslot in the plug and connected to the guard-tumbler.

4. In a pin-tumbler lock the combination with a tumbler-case,'plug and pin-tumblers, of a guard-tumbler carried by the plug and `adapted to enter a recess in the case, and a pluguard-tumbler, of a spring tending to hold the parts in their normal position.

6. In a pin-tumbler lock the combination with a tumbler-case, plug and pin-tumblers, of a guard-tumbler carried by the plug and adapted to enter a recess in the case, a plurality of guards or curtains normally obstructing the key-path in the plug and adapted when moved to be projected into recesses in case, and means connecting the guards or curtains and the guard-tumbler, whereby when either guard or curtain is moved the guard-tumbler will also move into its recess in the case.

7 In a pin-tumbler lock, the combination with a tumbler-case, a plug and pin-tumblers, of a guard-tumbler carried by the plug and adapted to enter a recess in the case, a plurality of guards or curtains normally obstructing the key-pathin the plug and adapted when moved to be projected into recesses in the case, means connecting the guards or curtains and the guard-tumbler, whereby when either guard or curtain is moved the guardtumbler will also bel moved into its recess in the case and a spring tending to'hold the parts in their nor- 8. In a pin-tumbler lock, the combination with a case,a plug, and pin-tumblers, of a guard-tumbler carried by the plug and adapted to enter a recess in the case, a plurality of guards or curtains normally obstructing the key-path in the plug and adapted when moved tobe projected into recesses in the case, a yoke or lever pivoted'to the guard-tumbler and resting at its ends on shoulders formed on the guards or curtains and a spring tending to hold the parts in their normal positions.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses. A

WARREN H. TAYLOR.

Witnesses:

SCHUYLER MERRITT, PATRICK KEEFFE.

TOO 

